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Finding the Fourth Proportional to 17,168.40, 25,709.40 and 11,293.20

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Solution

The fourth proportional to 17,168.40, 25,709.40 and 11,293.20 is: 16,911.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,168.40 : 25,709.40 = 11,293.20 : x
  2. Step 2: Convert to fraction form
    17,168.40/25,709.40 = 11,293.20/x
  3. Step 3: Cross multiply
    17,168.40x = 25,709.40 × 11,293.20
  4. Step 4: Simplify right side
    17,168.40x = 290,341,396.08
  5. Step 5: Solve for x
    x = 290,341,396.08/17,168.40
  6. Step 6: Final answer
    x = 16,911.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.